Wing nut



Patented Mar. 26, 1946 r "Leonard Carl Brose, Burbank; Calm, assignortto Adel PrecisiongProducts Corp., t-corporation" of California Application November29, 1 1 565317 igxmsims, (erase-+3 l 1 This invention relates-to improvements inselflockingspring nuts of thetype inwhicha sheet metal body portion is provided with resilient 7 members having opposed edges for threadedly engaging abolt or like fastening so as to lock the nut thereon. a

An object of this invention is to provide a wing nut on which a sheet metal body portion, resilient bolt-engaging portions formed integral therewith,and wingslikewise formed integral with the bodyportion, are constructed and relatively arrangedso thatthe locking-action of said boltengaging portions ismade more reliable and effective, the nut is .strengthened and reinforced asva whole, and the entire nut is tensioned and exerts forces which aid in the locking of the nut on, the :bolt.

' Another object of my-invention-ls vto provide a wing nutrsuch as described which may be easily,

and inexpensively made from a small; piece or stri of sheet metaland-will be comparatively light as to weight yet strong and durable and characterized by a reliable self-locking action so as to effectively resist loosening under vibration.

A further object of this invention is to provide a self-locking wing nut such as described in which the particular manner of forming the .integral wings on the sheet metal plate-like body of the nut, which body may be initially outwardly bowed to increase the spring action of the nut, causes said body to be so stressed that the nut is strengthened and has an increased spring locking action against the bolt or like fastening to which it is applied.

Another object is to provide a wing nut which constitutes an improvement in the art by reason of a construction such that the nut may be cheaply and easily made from a single rectangular strip of sheet or strap metal and will be considerably lighter than the conventional wing nut and at the same time as effective and subject to being easily die stamped to form in the body portion thereof a suitable means for threadedly engaging a bolt or like fastening.

With the foregoing objects in view, together with such other objects and advantages as may subsequently appear, the invention resides in the parts and in the combination, construction and arrangements of parts hereinafter described and claimed, and illustrated by way of example in th accompanying drawing, in which:

Fig. 1 is a top plan view of a wing nut embodying the present invention;

Fig. 2 is a side elevation of the wing nut;

Fig.3 is asectional'view'showing how the nut is applied.

Referring imore specifically to the, drawing; (it will be seen thata' wing nut embodying Jmy in-V Vention is made from a strip or elongatedipiece of resilient sheet metalista'mped or otherwise treated to form'a substantially. rectangular .body

portion 8, laterallyjuxtaposed elongated resilient arch portions -9 and In integral at their endsJwith said body portion, and wings or finger gripping portions ll inclined upwardly and outwardly from opposite ends of said body portion. A

The arch portions Sand 10 lie: for the mostpart in outwardly offset relation to the body portion and-are provided at points between vtheirerids with opposed arcuate side edge portions l2 which define an opening forreception of a bolt:or like member 13; In order that the edge portions '12 be properly :angularly "disposed for threadedly engaging the threads of the .bolt the arch portions 9 and Ill areoppositely inclinedand one or them is outwardly offset a greater extent than the other.

- As here shown the arch portions 9 and I0 are spaced inwardly from the side and end margins of the body portion which latter forms a somewhat rectangular frame around the arch portions and is adapted to seat on one of the two members l5 through which the bolt is inserted, as shown in Fig. 3 to secure such members together.

The wings II are formed by bending the end portions of the strip of sheet metal of which the wing nut is formed, so that such end portions are channel shaped in cross section, with their convex sides uppermost as shown.

In forming the wings to extend in outwardly and upwardly inclined relation to the body portion, upwardly and outwardly curved web or flange portions I! are formed in the nut shown in Figs. 1 to 3. This bending and forming of the wings imposes stresses on the body portion such that the bridge or arch portions are stressed for an effective resilient and yielding engagement with the bolt, assuring a spring locking action such that the nut and bolt will not loosen under vibration.

If desired the body portion 8 may be preformed with an outward bow between the juncture points of the body portion and the wings so that on the contacting of such body portion with one of the members l5 as the bolt is tightened the spring action of the body portion will be brought into play to assist in the tight gripping of the bolt by the arches 9 and I0, thereby eflectively locking the nut on the bolt.

" 2,397,938 r. .l a 7:6: 1 TH:

It should be noted that wings ,bocly portions fining an opening through the body portion and 8 and arches 9 and ID are constructed and reladisposed for threadedly engaging a bolt inserted tively arranged in such manner that the entire through said opening, and Wings formed integral nut is under spring tension when tightened on with'opposite end portions of said body portion the bolt as shown in Fig. 3, thereby causing the 5 inclined outwardly'and upwardly therefrom, beedges l2 to'bite into the bolt and lock the nut ing formed by bending into channelled shape exthereon in a most reliable manner. Moreover, tensions of a rectangular piece of sheet metal of the particular formation of the wings and body which the body portion is formed, the channels portion strengthens and reinforces the nut as a insaid wings opening downwardly. v

Whole and adds rigidity While at the same time 10 2. In a wing nut, a resilient sheet metal body increasing the resilient locking action when the 1 portion having outwardly struck arch portions nut is tightened on the bolt. 7 U lfo'rmed with bolt-engaging side edge portions de- The particular wing nut hereof is considerably fining an opening through the body portion and li ter t a wi s uts of the c nv l typ disposed for threadedly engaging a bolt inserted 1 and more efiioient in view of he self-l cki a0'- through said opening, and wings formed integral 7 tion thereof and the fact that it has comparable t opposite endportions of said body portion s r n h and can be Produced a a w 9 and inclined outwardly and upwardly therefrom;

with a relatively small amount of cheaper metal. aid wings being formed by bending int h t struction due to the resilience of the nut will have place It should also be noted that the Wing nut herenelled shape extensions of the piece of sheet metal of in being made from a single piece of sheet of which the body portion is formed, said body metal of uniform width and readily stamped and portion being outwardly I bowed between the bent to form the body portion and thechan" points where the wings are joined thereto thev nelled Wings,-lends itself to a ready formation of e s in saidbwings opening downwardly and any suitable arrangement of its body portion to the p t i' n o m Ofp thebody of the t Provide f a threaded engagement the nut being free to spring downwardly under the stress with the bolt, and that such threadmw applied to them when the nut is screwedinto a self-locking action. Furthermore, the'wings t 3 n wing nut; a plate-like body portion which e tend up m t end Portions formed of a single piece of resilient sheet metal f the Owing to being p d y arched in having extensions from opposite sides thereof cross section at the poi s where they Jo the doubled into channelled form upwardly archedin base portion of the nut, are strongly united therecross ti wher /they join i body poition V to and yet do not impair the resiliency of the nut nd'b nt t extend "upwardly and outwardlyja's body throughout its side edge portions, which finger gripping wings, and means embodied in the t the nut is screwed into place.

5 formed with bolt-engaging side edge portions deportions are free to spring downwardly between 3 body portionproviding an opening therein and their ends under the stress appliedto-them when threadedly engaging aboltor like threaded meme Iclaim; tions of the nut body between said wings being In a wing nut, a' resilient sheet metal body freely defiectable under the stress applied to h t rdl struck' arch portions 40 them when the nutis screwed into place. w y t. V lLEQNARD CARL .nnosn zs ber turned in said opening, the opposite -si de--por-- 

